Radiator



Dec. 8, 1931.

D. A. UslNA RADIATOR Filed Dec. 18, 1929 Patented Dees, 1931 UNITEDstarrt-is` 4PATENT OFFICE Y* DOMINGO ANTHONY USINA., VF NU'TLEY, NEW'VJERSEY, ASSIGNOR TO VMUR/RAY `IVLA- DIATOR CORPORATION, OF BROOKLYN, NEWYORK, A CORPORATION 0F NEW `YORKA RADIATOR y 4Application led kDecember18, 1929. Serial No. 414,855.

In a certain previous. application Serial No. 294,191 filed July 20,1928, thereisdescribed a radiator comprising a steam pipe or otherheating element and an extended area structure applied theretoand'fastened by certain supplemental fastening devices.

The present invent-ion is directed to certain improvement in radiatorsof that general type. The accompanying drawings illustrate an embodimentof the invention.

Fig. 1 is aside elevation of an lend of the radiator; p i Y Fig. 2 1s ahorizontal cross-section thereof;

Fig. 3 is a vertical cross-section on the line longitudinal portions 3and at their inne-r edges by longitudinal portions 4 which are bentoutwardly at intervals to form recesses 5 embracing the pipe 1 betweenthem. TheA corrugated plates are preferably of copper or aluminum orother metalscf high heat conductivity. The pipe is preferably of copperor of other metal or alloy of comparatively high heat conductivity. Forfastening the corrugated sheets on to the pipe longitudinally extending(that is, extending in the same direction as the heating element) strapsor rods (preferably of steel)` are used comp-rising inner portions 6which bear against the portions 4 of the corrugated sheets and lateralportions 7 connectedA at their outer ends by longitudinal portions 8embracing the outward corrugations of the sheets.

These straps are located close to the tube sections at points above andbelow the tube sections. The registering straps at opposite sides arethen fastened together, preferably by awelued jena, iaaieeted et 9, Fig.4. The

apparatus and method of producing such a welded joint are described morefully kin a Phelps application Serial-No. 305,652 `filedY September 13,11928.V They maybe welded in other ways or may be fastened by otherflastening means which will clamp the plates 4 closely into engagementwith the pipe so as to provide and'maintain a` good heat conductingjoint. Such a good Contact is important particularly in. this type ofradiator where the corrugations provide vertical fines closed at thesides and open at the top and bot-tom and acting likechimneys tomaintain a rapid circulation of air and to take awaythe heat veryrapidly so that it'must ber supplied very rapidly from the steam. pipe'through the extended surfaces ofthe corrugated structure. The sameyconsiderations apply with other typesofextended heat radiating surface.

The straps fpreferably also bear `against ltheI outer faces Iof kthecorrugatedsheets throughout their contour..l They `may in fact bearagainst such faces so closely asto slightly Adepressthe sheets along thelines of engagement `and Ithus'loclf: the parts togetherv more firmly.Sucha constructionV is illustratedinf Fig. 5 where-the strap 8 fits in adepression 10 inthe corrugated sheet. The depression 10 may be formedbeforehand so asto providea convenient locating means for the straps inassembling the parts, or they may be formed by the taking up of thestraps in the welding operations as they-are pressed together.V

Straps passingV entirely outsidev of the sheets are more easily appliedthan where .they have to pass through openingsin the sheets as in mypreviousA application, above identified. Thus V,the assembling.' and thewelding operations can be Vmore'economically performed. The` straps ofthe present arrangement stiffen the radiator longitudinally andreinforceit against lateral bending. By bearing against the outer facesof the sheets, at several peints in their length,

llieyzlleeetillentliemetilo'leuelislieete. Their locati-on beyond theouter faces of the sheets also protects the latter to a considerableextent against accidental injury. ,Vith the construction hereindescribed the sheets maybe of extremely thin 1Where straps of suchsit/.e and material are used as to be sirfiicieiitly stili", they willhold the parts together firmly without the necessity of welding` them atall points, that is, between eachrpair of c-orrugations.

In special locations the extended area structures are ditierent atopposite sides of the heating element, and in some cases such structureis applied to only one side. The straps of this invention may likewisebe applied to only one side (combined with. fastening means of adii'i'erent type at the other side) or the straps may be of ditlerentde` signs to accommodate the designs of the sheets at opposite sides. Y

Various other modilicatio'ns may be made by those skilled in the artwithout departing 'from the invention as deiined in theV appendedclaims.

That I claim is:

1. A radiator including` in combination a heating' element, an extendedheat radiatin g surface structure in two parts applied to opposite sidesof the heatingelement, and means for holding the two parts togethercomprising` longitudinally extending straps applied to the outer facesoit said structure and lying entirely outside of and upon such outerfaces, the straps at opposite sides of the radiator being united to eachother.

2. A radiator including in combination a heating element, an extendedheat radiating sur ace structure in two parts applied to opposite sidesof the heating element. and means for holding the two parts togethercomprisinglongitudinally extending` straps applied tothe outer faces o'said structure and lying entirely outside of and upon such outer faces,the straps at opposite sides bearing against theV portions of saidstructure immediately adjacent to the heatingelement and welded to eachother through said portions.

3. A radiator including in combination a heating element, a corrugatedsheet metal structure in two parte applied to opposite sides oit' theheating element and longitudinally extending straps bearing against theouter faces of the corrugated sheets substantially throughout theirperiphery.

d. A radiator including in combination a heating;v element, a corrugatedsheet metal structure in two parts applied to opposite sides of theheatingr element and longitudi-v nally extending;` straps bearingagainst` the outer faces of the corrugated sheets substanthiallythroughout their periphery and lying in depression in said sheets.

5. A radiator including in combination a heating element7 an extendedheat radiating DGMINGO ANTHONY USINA.

